<!--
 * @Descripttion: 主页
 * @Author: armin
 * @Date: 2021-07-19 15:14:21
 * @LastEditors: armin
 * @LastEditTime: 2021-08-26 15:39:58
-->
<template>
  <div class="home-page container-md">
    <section class="text-center contanier">
      <div class="row py-lg-5">
        <div class="col-lg-6 col-md-8 mx-auto">
          <img src="../assets/callout.svg" alt="callout" class="w-50" />
          <h2 class="font-weight-light">随心写作，自由表达</h2>
          <p>
            <a
              href="#"
              class="btn btn-primary my-2"
              @click.prevent="createOrLogin"
              >开始写文章</a
            >
          </p>
        </div>
      </div>
    </section>
    <h4 class="font-weight-bold text-center mb-4">发现精彩</h4>
    <column-list :list="list"></column-list>
    <button class="btn btn-outline-primary mt-2 mb-5 mx-auto btn-block w-25" @click="loadMorePage" v-if="!isLastPage">加载更多</button>
  </div>
</template>

<script lang="ts">
import { computed, defineComponent, onMounted } from 'vue'
import ColumnList from '@/components/ColumnList.vue'
import { useStore } from 'vuex'
import { useRouter } from 'vue-router'
import useLoadMore from '../hooks/useLoadMore'
import { IGlobalDataProps } from '@/store'

export default defineComponent({
  components: {
    ColumnList
  },
  setup () {
    const store = useStore<IGlobalDataProps>()
    const router = useRouter()
    const total = computed(() => store.state.columns.total)
    const currentPage = computed(() => store.state.columns.currentPage)
    onMounted(() => {
      store.dispatch('fetchColumns', { pageSize: 3 })
    })
    const list = computed(() => store.getters.getColumns)
    const { loadMorePage, isLastPage } = useLoadMore('fetchColumns', total, { pageSize: 3, currentPage: (currentPage.value ? currentPage.value + 1 : 2) })
    const createOrLogin = () => {
      const isLogin = store.state.user.isLogin
      if (!isLogin) {
        router.push('/login')
      } else {
        router.push('/create')
      }
    }
    return {
      list,
      isLastPage,
      loadMorePage,
      createOrLogin
    }
  }
})
</script>

<style scoped>
</style>
